Abstract
Silica-based nanoporous surfaces have been developed in order to capture low molecular weight peptides from human plasma. Harvested peptides were subjected to mass spectrometric analysis by using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) as a means of detecting and assessing the bound molecules. Peptide profiles consisting of about 70 peaks in the range 800-10 000 m/z were generated. The method could allow detection of small peptides at ng/mL concentration levels, either in standard solutions or in plasma. The same molecular cutoff effect was observed for mixtures of standard proteins and peptides incubated with silicon-based nanoporous surfaces.
Original language | English |
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Pages (from-to) | 1261-1266 |
Number of pages | 6 |
Journal | Journal of Proteome Research |
Volume | 5 |
Issue number | 5 |
DOIs | |
State | Published - May 2006 |
Externally published | Yes |
Keywords
- Human plasma
- MALDI-TOF
- Mass spectrometry
- Nanoporous silica
- Nanoporous silicon
- Peptide profiling